title: Double-blind trial of oral 1,25-dihydroxy vitamin D3 versus placebo in asymptomatic hyperparathyroidism in patients receiving maintenance haemodialysis.
abstract: Fifty-seven patients who had been receiving maintenance haemodialysis for a mean of 4.6 years were given 0.25-0.5 microgram oral 1,25-dihydroxy (1,25-(OH)2) vitamin D3 or a placebo in a double-blind manner for one to two years. In patients with normal radiographs (mean plasma parathyroid hormone concentration 205 microliterEq/ml) 1,25-(OH)2 vitamin D3 prevented the development of the radiological appearances of hyperparathyroidism. In patients with abnormal radiographs (mean plasma parathyroid concentration 709 microliterEq/ml) 1,25-(OH)2 vitamin D3 arrested or reversed the radiological changes of hyperparathyroidism. Nevertheless, the response was slow and the concentration of the hormone remained considerably raised (mean 445 microliterEq/ml). It is concluded from these results that giving 1,25-(OH)2 vitamin D3 to patients receiving maintenance haemodialysis who have normal hand radiographs or minimal erosions is beneficial. In patients with more advanced hyperparathyroidism parathyroidectomy should be considered unless there is a rapid response.
mesh_terms: D000328:Adult; D000469:Alkaline Phosphatase / Q000097:blood; D002117:Calcitriol; D002118:Calcium / Q000097:blood; D002986:Clinical Trials as Topic; D004100:Dihydroxycholecalciferols; D004311:Double-Blind Method; D005260:Female; D006437:Hemodialysis, Home; D006801:Humans; D006961:Hyperparathyroidism / Q000097:blood / Q000000981:diagnostic imaging / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000097:blood; D011859:Radiography; D006435:Renal Dialysis
chemical_list: D004100:Dihydroxycholecalciferols; D010281:Parathyroid Hormone; D000469:Alkaline Phosphatase; D002117:Calcitriol; D002118:Calcium